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Recognised as Colour

#5B47BB

  • #5B47BB
  • Blue
  • Dark
  • Nearest: Slate blue

#5B47BB is a blue with RGB values 91, 71, 187 and HSL 250°, 46%, 51%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Slate blue.

Colour values

#5B47BB#5B47BB
HEX#5B47BB
RGBrgb(91, 71, 187)
RGB (0–1)0.3569, 0.2784, 0.7333
RGB percentages35.7%, 27.8%, 73.3%
HSLhsl(250.3, 46%, 50.6%)
HSV / HSBhsv(250.3, 62%, 73.3%)
CMYK51.3%, 62%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,982,139
CSS custom property--colour: #5B47BB;

Brightness & contrast

Relative luminance0.10318WCAG 2.x, 0 is black and 1 is white
Perceived brightness97.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.85:1
Contrast with white6.85:1WCAG normal text: AA
Contrast with black3.06:1WCAG normal text: Fail
Greyscale equivalent#545454
Inverted#A4B844

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005EBFno red cones; affects about 1% of men; ΔE 23.8 from the original
Deuteranopia#0057B9no green cones; the most common form, about 1% of men; ΔE 21.4 from the original
Tritanopia#37637Ano blue cones; rare, and affects men and women equally; ΔE 62.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.85:1WCAG large text: AAA
Contrast with black, large text3.06:1WCAG large text: AA

Named colours

Slate blue · ΔE 7.5Rebecca purple · ΔE 13.3Medium slateblue · ΔE 15.5Royal blue · ΔE 17.1Medium purple · ΔE 18.7Dark slateblue · ΔE 22.2
Nearest named CSS colourSlate blue (#6A5ACD)ΔE 7.53, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A7BB47
Analogous#476DBB, #9547BB
Triadic#BB5B47, #47BB5B
Split complementary#BB9547, #6DBB47
Tetradic#BB476D, #A7BB47, #47BB95

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E0DCF2
Lighter +30%#BFB7E4
Lighter +20%#9D91D7
Lighter +10%#7C6CC9
Darker −10%#483897
Darker −20%#362A72
Darker −30%#251C4D
Darker −40%#130F27
More saturated +25%#4628DB
Less saturated −25%#70679B

Channel breakdown

R91
G71
B187
Red91 (35.7%)
Green71 (27.8%)
Blue187 (73.3%)
Hue250.34°
Saturation (HSL)46.03%
Lightness50.59%
Dominant channelBlue
Hex per channelR 5B · G 47 · B BB

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Every value on this page was computed from “5b47bb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.